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Atmospheric Composition

We have operated a ground-based microwave instrument that measures the vertical profile of stratospheric ozone at Lauder, New Zealand since 1992, and a second such instrument at Mauna Loa, Hawaii since 1995. They are designated as Primary Instruments in the Network for Detection of Atmospheric Composition Change (NDACC). They have recorded data nearly continuously since installation; these data are recorded on NDACC and AURA Validation Data Center archives and are a valuable resource for measurement of long term ozone trends and for validation of satellite-borne instruments. We propose herein to continue these measurements and analyses using them during the period 1 May 2009 - 30 April 2013. The Principal Investigator intends to retire in 2013. An important element of this proposal is a plan to transfer responsibility for these measurements to a group in the Remote Sensing Division of the U.S. Naval Research Laboratory at the time of the next proposal cycle in 2013. NRL is well qualified to take over the work, as they operate similar instruments measuring water vapor. In preparation for this transfer, we herein propose to update the above instruments. This work is critical for the long-term continuation of the measurements, as the skills needed to repair certain parts of the instruments are no longer available due to changes in construction techniques that have occurred since the instruments were built. The instruments’s receiver and spectrometer will both be updated. The receiver effort will take place primarily at the University of Massachusetts and the spectrometer effort at the Naval Research Laboratory. U. Mass. and NRL personnel will collaborate closely to insure a smooth and complete transition.

Project PI: Alan Parrish/University of Massachusetts

Department of Astronomy University of Massachusetts Lederle Graduate Research Tower B 619E 710 North Pleasant Street Amherst, MA 01003-930

Phone: (413) 545-4870

Fax: (413) 545-4223

Email: parrish.astro.umass.edu

http://www.astro.umass.edu/people.php?id=directory/parrish

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Started: Aug 09, 2010

Last Activity: Dec 10, 2010

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